/*
 * Copyright 2022 Bytedance Inc.
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.bytedance.css.service.deploy.worker;

import java.io.IOException;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;

public class FileNotifier {

  private final AtomicInteger numPendingFlushes = new AtomicInteger();
  private final AtomicReference<IOException> exception = new AtomicReference<>();

  public AtomicInteger getNumPendingFlushes() {
    return numPendingFlushes;
  }

  void setException(IOException e) {
    exception.set(e);
  }

  boolean hasException() {
    return exception.get() != null;
  }

  void checkException() throws IOException {
    IOException e = exception.get();
    if (e != null) {
      throw e;
    }
  }
}
